Congresswoman Mary Bono Mack has been caught on camera in a lurid scandal where another woman is apparently licking her breast.

Click here to see all the PHOTOS of Mary Bono partying with her ex-billionaire pal

RadarOnline.com has exclusively obtained the photo which shows the powerful politician in a playful, but compromising position with a campaign donor who is now being investigated by the FBI.

Bono, 49, is a Republican lawmaker representing California's 45th congressional district and sits on the Committee on Energy and Commerce.

She is the widow of Sonny Bono and has been in Congress since 1998.